含分布式电源的配电网快速前推回代算法  

Fast Back/Forward Sweep Algorithm for Distribution Network with Distributed Generation

作　　者：刘会家[1] 李奔[1] 廖小兵[1] 李珺 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]国网湖北电力中超建设管理公司,湖北武汉430022

出　　处：《水电能源科学》2016年第6期213-216,212,共5页Water Resources and Power

摘　　要：为解决分布式电源接入配电网带来的配电网潮流计算问题,在已有配电网潮流算法基础上,提出了一种能有效处理分布式电源并网问题的配电网快速前推回代改进算法。该算法首先基于配电网拓扑分析求得配电网快速前推回代算法所需的支路电流-节点电流关系矩阵和支路电流-节点电压降关系矩阵。其次,根据各种分布式电源的潮流计算模型计算其输出有功、无功功率,并引入节点等效注入电流模型作为前推变量,从而实现配电网快速前推回代算法求解含分布式电源的配电网潮流计算问题。最后通过对IEEE33节点系统进行仿真计算,验证了该算法的可行性,为含分布式电源的配电网潮流计算提供了新方法。Based on the existing power flow algorithms for distribution network,an improved fast back/forward sweep algorithm for distribution network is presented to solve the power flow calculation problem caused by distributed generation connection into distribution network.At first,the bus-injection to branch-current matrix and branch-current to bus-voltage matrix are obtained based on network topology analysis,which are required for fast back/forward sweep algorithm.Secondly,the output active and reactive power are calculated according to the power flow model of DGs,and the node equivalent injection current model is introduced as forwarding variable so as to deal with the power flow of distribution network with DGs by using the fast back/forward sweep algorithm.Finally,simulations with IEEE 33 nodes system are carried out to verify the feasibility of the proposed method.Therefore,it provides a new method for power flow calculation of distribution network with distributed generation.

关 键 词：配电网 分布式电源 潮流计算 快速前推回代 等效注入电流 

分 类 号：TM743[电气工程—电力系统及自动化]